The CA53 collection – better known as the Casio Calculator watch – now comes in a finish ... You'll find it in three finishes here – black is the original, but we also have a green-blue ...

While we're talking about cult classic watches, the Casio Calculator watch deserves a mention ... You'll find it in three finishes here – black is the original, but we also have a green-blue ...

The calculator watch market was relatively sleepy until 1980 when Casio decided to make them. The CFX-400 was a top-of-the-line scientific calculator that even did hex (photo: [Septagram] Public ...

Want a digital watch that’s still delightful and nerdy but sans a calculator? This Casio is also on sale and is only $19. A true watch lover is into all kinds of watches, not just the super ...